KNX city – Solutions

KNX city – Solutions

Content

Energy efficiency in retrofit KNX as an advantage when retrofitting 4 Demand Side Management Use solar power instead of paying for peak power 5 Renewable Mobility Driving around town with your own solar energy 6 Saving heating energy costs Efficient heating with fire and flame 7 Self-sustainable single family house Energy management when you’re off-grid 8 Distributed facilities A quick check on what’s going on at the office 9 Overall energy management in buildings Central control increases hospital efficiency 10

3 2014 KNX city – Solutions

Energy efficiency in retrofit KNX as an advantage when retrofitting

The challenge As well as single and three- KNX ammeter with current Benefits The KNX city is built on solid phase KNX energy meters, transformer (Zennio) for in- • Use of the existing KNX foundations. That includes not KNX actuators with current dividual appliances. Additional bus line for retrofitting exi- just the trusted KNX system detection and KNX modules consumers can be switched sting buildings with measu- itself, but also the experience with current transformers on using KNX push buttons. ring equipment gained over the past 20 years are also available. Although • Centralised and decentra- of equipping buildings with the measuring accuracy of Functions lised energy consumption KNX bus lines, either as part the latter is not suitable for All the KNX energy data can measurement of early automation efforts or billing purposes, it is suf- be recorded, documented and • Overview of energy flows as a far-sighted precaution. ficient to give a general idea visually displayed at a central for the optimisation of en- KNX connects the key techni- of the energy consumption location, as preferred by ergy consumption cal features in buildings better in a building. They can be building operators in real life. • Historical energy data than any other system. Ing- used, particularly in existing The data are then available for monitoring the effec- enieurbüro Beyer shows how distributors, as space-saving for processing with Excel or tiveness of energy-saving this trump card can be played replacements for the original for access by a superordinate measures to make existing buildings actuators, or fitted in sockets. energy management system. • Database can also be used more energy-efficient. The Charts and graphics can reveal by other programs first step is always a detailed Practical the energy consumption of a consumption survey in order implementation building over the course of to observe and document the The project application uses a day. Individual consumers energy consumption. various different energy me- can be shown if desired, and ters: KNX meters for overall photographs of distributors The solution consumption (Gira), KNX in existing buildings provide The KNX system offers nu- energy actuators (ABB) and a convincing argument in fa- merous solutions for sur- actuators with current de- vour of retrofitting with KNX veying consumption both tection for the consumption measuring equipment and of centrally and decentrally. in consumer circuits, and a how easy it is to carry out.

Ingenieurbüro Beyer old actuators Gebäudesystemtechnik changed by Dipl.-Ing., Dipl.-Wirt.-Ing. actuators with Dirk Beyer power detection Liegnitzer Str. 10 24537 Neumünster Phone: 04321 / 9938-0 Fax: 04321 / 9938-28 Mail: [email protected] www.ing-beyer.de calibrated meters

systems for retrofitting

4 2014 KNX city – Solutions

Demand Side Management Use solar power instead of paying for peak power

The challenge The solution switching actuators. The logic self-generated energy con- It makes sense in econom- The consumer load consists connections are implemented sumption increases. One of ic terms if urban electri- of two boiling pans of 18 kW via a KNX visual display. The the purposes of documenta- cal power requirements are each, one tilting fry-top demand side management tion of demand side manage- matched to the power being (20 kW), and three steamers system also takes into account ment is to provide evidence generated at the time. The (19 kW each). The aim is to the power generated by the of any manual intervention incentive for this is provided control these heavy-duty units installation’s own photovol- in demand side management by energy supply contracts so that the total of their indi- taic system (installed power: (override switching) by the dependent on peak loads, or vidual loads does not exceed 30 kWp). chef. ‘differential electricity tar- a preset value. This set value is iffs’. Intelligent demand side represented by energy values Functions Benefits management systems are valid for 15 minutes at a time. The demand side management • Demand side management growing in importance, espe- In consultation with the chef, system programmed using integrated in the KNX sys- cially as a way of complying rules are drawn up setting out KNX software works in a tem with the conditions of these priorities so that the units can more differentiated way than • Prevention of peak loads kinds of contracts and tariffs, be switched off for short pe- conventional maximum-value • Coordinated switch-off rules particularly as a consequence riods without any noticeable monitoring, and is based on • Increased use of self-gene- of the increased contribution effect on performance. a coordinated set of rules rated solar power by solar and wind power. and setpoints. In order to • Expandable for tariff ma- The company Gebäude-Pro- Practical be able to react at an early nagement purposes (high grammierer-Service e. K. implementation stage during the 15-minute and low tariffs) Helmut Haßenpflug, Frielen- The electrical consumers are intervals, the demand side • Visual displays and docu- dorf, shows how commercial represented by KNX energy management system con- mentation consumers can use KNX to meters (Hager, ABB) or an tinuously calculates the trend avoid expensive peak loads S0 tap on the main meter. in demand. Furthermore, and benefit from low-cost As the canteen kitchen units surplus solar power raises tariffs or even self-generated are fitted with potential-free the setpoint, so that switch- solar power, taking a canteen contacts, their contactors can offs that would have been kitchen as an example. be operated directly by KNX necessary are avoided and

GPS Gebäude-Programmier- Service e.K. Haßenpflug Helmut Haßenpflug Hauptstr. 29 34621 Frielendorf Phone: +49 (5684) 92 29 57 Fax.: +49 (5684) 92 29 58 Mail: [email protected]

5 2014 KNX city – Solutions

Renewable Mobility Driving around town with your own solar energy

The challenge and not much is used in the Functions Benefits Electric mobility will play an house itself, it makes sense The particular technical re- • Use of carbon-neutral en- important part in sustain- to charge the electric vehicle finement of the presentation ergy for private transport able cities such as the KNX using the surplus solar power is the interface between the • Increasing private con- city. A key aspect of this is as far as possible. The KNX electric vehicle and KNX. The sumption from solar power that electric vehicles used system calculates an output charging post is fitted with a • Solution is simple to imple- in private transport will be target value from the differ- charging control unit (Wago ment charged using renewable, ence between the current grid Pilot-Box). This starts and • Use of the KNX system carbon-neutral energy. As feed-in and private consump- stops the charging process which is already installed the timeframe for charging tion. This is used for calculating and can automatically set dif- • Based on the calculated en- electric cars at charging sta- the charging capacity. ferent charging currents (6 A, ergy surplus, KNX enables tions in car parks or garages 10 A, 16 A, 32 A) controlled other consumers to be ac- is usually flexible due to long Practical by KNX. This is regulated tivated, further increasing standing times, the charging implementation using the set value calculated the amount of power con- operation can be adapted KNX meters (Hager) meas- from the energy surplus. The sumed on site. to the building‘s own solar ure the consumption and underlying logic is: small sur- collectors or wind turbines. generation figures. A KNX plus = low charging current, The presentation by Koyne- weather station (ABB) sup- large surplus = high charging System-Elektronik, Berlin, plies data on wind, rain and current. The channels of shows an intelligent solution solar radiation. Temperature a KNX actuator drive the to this problem based on values are sent to the bus potential-free inputs of the KNX. by the KNX analogue input Pilot-Box accordingly. The (Jung). The charging post is connection to the electric The solution controlled using KNX logic vehicle is via standardised The project shows a single and a KNX actuator. Current pulse-width communication. family home with its own pho- solar radiation values and tovoltaic system, the power the temperature of the solar from which is both fed into the modules measured by KNX grid and consumed on site. If a are used for monitoring and lot of solar power is produced control.

Koyne-System-Elektronik intelligentes Wohnen Marco Koyne Dipl.-Ing. (BA) Elektrotechnik Automatisierung Duchrother Str. 38 12559 Berlin, Germany Phone: +49 (0)30 - 47 03 21 82 Fax.: +49 (0)30 - 47 03 21 83 Mail: [email protected]

6 2014 KNX city – Solutions

Saving heating energy costs Efficient heating with fire and flame

The challenge regulated entirely by boiler The connection between surface area, so that the sup- One single system to con- controls, which respond to KNX and the boiler is pro- ply temperature is matched trol all building services and the outdoor temperature, vided by an OpenTherm/KNX exactly to the requirements. components conveniently, in contrast to thermostatic interface (Theben), allowing Furthermore, timer schedules reliably and energy-efficiently: valves that respond to the the KNX system direct ac- ensure economical heating by that’s KNX. One of the ways temperature indoors. How- cess and regulate the gas automatically switching the in which the KNX system ever, a holistic heating control flame, control a circulation room temperature controller increases energy efficiency system will also take into pump and request information to standby or reducing the is by making more efficient account the current heating about the boiler tempera- temperature at night. A visual use of primary energy, thus requirements for the sup- ture. The gas consumption display and documentation of benefiting the world’s climate, ply temperature, which will is determined by an S0/KNX the heating control system the environment, the purity of save primary energy. This is converter (Arcus EDS). The and current gas consumption the air in our cities, and last achieved by a KNX gateway existing alarm system can be in the actual residential build- but not least the user’s wallet. to the boiler control bus used to monitor the windows ing can be consulted to op- The project from the engi- protocol, which creates the – an example of the synergies timise energy-saving efforts. neering company HSEG (Ing- necessary link to the heat- offered by the KNX system. enieurbüro für Elektroplanung ing system. Individual room Benefits und Gebäudesystemtechnik control can be retrofitted as Functions • Energy-efficient heating Dipl.-Ing. Holger Schult) from a wireless system, and link- When heat is requested by • Primary energy savings Glienicke in Germany shows ing the valves with window a KNX room temperature • Permanently comfortable how KNX individual room contacts optimises the energy controller (Gira) connected heating matched to requi- control can be retrofitted efficiency still further. to the system, the request is rements in order to exercise direct transmitted to both the valve • Simple to retrofit control over the heating gas Practical actuator and the gas flame. • Continuous monitoring of or oil burner. implementation The intensity of the heat sup- consumption The presentation shows how plied is calculated on the basis • Flexible for further optimi- The solution KNX individual room control of a sophisticated logic based sation Until now, consumption of can be easily retrofitted via a on room sizes as a propor- primary energy has been wireless system (Weinzierl). tion of the overall building

HSEG – Ingenieurbüro für Elektroplanung und Gebäudesystemtechnik Dipl.-Ing. Holger Schult Waidmanssweg 7 16548 Glienicke Phone: +49 33056 89632 Fax.: +49 33056 89633 Mail: [email protected]

7 2014 KNX city – Solutions

Self-sustainable single family home Energy management when you’re off-grid

The challenge dential house, a guest house power-saving LED technol- KNX sensors (Lingg & Janke) ‘Self-sustainable – that’s and a swimming pool. Electri- ogy, and importance is at- measure the supply and re- what we ought to be!’ is the cal energy is generated by a tached to having the highest turn temperatures and also thought running through the 5.5 kWp photovoltaic plant Energy Label on the domestic the temperature in the heat mind of many a householder and a 1.2 kWp wind turbine, electric appliances. The KNX storage unit of the solar and every time the electricity and the energy storage unit system controls the lighting, heating system. If the heat bill comes in. In view of the consists of an 800 Ah/40 V solar control components hits a minimum level, the oil energy turnaround and its solar battery. If these energy and room temperatures and burner is started. KNX also constantly increasing prices, sources are not sufficient, an incorporates energy-saving controls the well pump as a the trend towards energy emergency power generator automatic equipment such function of the cistern level, self-sustainability could be steps in. Heat for hot water as presence detectors. If the and monitors the heating oil interesting in the sustainable and heating is provided by electricity supply nonetheless tank and the protective circuit city as well. In remote areas, solar collectors or in an emer- starts to run low, a load- breakers. some buildings already meet gency by an oil-fired boiler. shedding function switches off all their power needs with The KNX system performs certain predefined consumers Benefits self-generated electricity. a number of different tasks in for a brief period. • More economical energy The presentation by Smart order to match the electricity use Building Design GmbH from consumption in the building Functions • Reliable electricity supply Switzerland shows how KNX to the availability of electrical The system’s sophisticated • Solar, photovoltaic and ci- can optimise the interplay of energy, and to coordinate the technical features also include stern systems all integrated energy generation, storage various energy sources with battery charge monitoring by • Heating and ventilation and use. one another. a KNX analogue input. If the performance optimised by charge drops to a level below KNX The solution Practical 50 percent, KNX starts the • Visual displays for operati- The project shows the KNX implementation generator and switches over on, monitoring and analysis installation at ‘Finca Los Míti- The building services have the power supply line. Elec- • High energy efficiency cos’ on the holiday island of been designed with energy tricity consumption is meas- Mallorca. The 450-square me- efficiency firmly in mind. For ured, analysed and visualised tre property includes a resi- example, the lighting uses by KNX.

Smart Building Design GmbH Peter Sperlich Obschlagenstrasse 23 8916 Jonen Swiss Phone: +41 76 75 00 152 Mail: [email protected] www.smart-building-design.ch www.eib-home.de

8 2014 KNX city – Solutions

Distributed facilities A quick check on what’s going on at the office

The challenge in a commercial building. All can be viewed on a single convenient ‘talking’ room Is there anyone still in the of- of the functions of the two visual display (Homeserver), controllers (Enertex) will be a fice? Has anyone remembered buildings, for example lighting and monitored, controlled very popular attraction among to put the alarm on? Employ- control, the shading system, and preset via a touchscreen visitors to the fair. Not only ers in particular will appreci- home communication, me- (Gira). This is where all alerts can they be used to control ate the way that KNX makes dia control and malfunction and video footage from the lighting scenes, multimedia it possible to check up on messages are integrated into house system are displayed. and setpoint temperatures your business premises, turn a single, completely homoge- The ‘commercial building’ by voice, but they can even down the air conditioning or neous operating concept. The demonstrates, for example, answer users’ spoken ques- switch the lights on or off, internet is the network used how a VdS-certified burglar tions about the statuses of all without leaving your own to link the two ‘buildings’. alarm system can communi- these functions. home. Elektro Wagner GmbH cate with a KNX installation. in Wehrheim, Germany, has Practical The integrated KNX inter- Benefits tackled the issue of network- implementation face links the systems in a • Easy monitoring of the buil- ing two sites to permit the Both of these two building in- completely transparent way, ding technology in separate operation and monitoring of stallations are based on KNX allowing status information buildings from a single loca- one building from the oth- technology. They are joined to be requested and control tion er. The project additionally by KNX IP via VPN (Gira, room equipment to be oper- • Consistent, ergonomic shows how several sites can with ABB KNX IP routers). ated all via KNX. operating concept means be incorporated into a single, The VPN Tunnel ensures that two buildings can be opera- centralised energy manage- communication between the Functions ted just as easily as one ment system, in line with the buildings is adequately pro- KNX does not only allow the • Easy to quickly check ope- ‘sustainable city’ concept. tected against unauthorised functions of the commercial rating statuses and remedy access. building to be monitored faults The solution In the residential building and controlled from the resi- • Better monitoring of en- The sample project is por- there are local operating keys dential building; conversely, ergy use saves energy and trayed with the help of two for light, room temperature it is also possible to deter- money examples, one representing control, music and voice mine from the office whether • System is easy to modify or the typical functions of a (Merten, Jung, Elsner, Arcus- someone is ringing the door- add to thanks to KNX tech- residential building, the other EDS), a video entry phone sys- bell, the heating system is nology showing examples of the tech- tem (Gira), and a Multiroom faulty, or the CCTV has been nology that might be found system (Trivum). All functions triggered back at home. The

Elektro Wagner GmbH Bierhausweg 1 61273 Wehrheim Phone: +49 (6081) 9525-0 Fax.: +49 (6081) 95 25-95 Mail: [email protected] www.elektro-wagner.com

9 2014 KNX city – Solutions

Overall energy management in buildings Central control increases hospital efficiency

The challenge an appropriate KNX Gateway Patients have control of the Benefits Everything in hospitals in the (Wago), without having to lighting, blinds and room • Technical management for sustainable city is focused on lay any cables. This measure temperature at their finger- efficient building use the treatment and recovery helped to avoid heat loss e.g. tips. They can also switch on • Central energy manage- of the patients. This requires through open windows. Au- and select programmes on ment the building services to func- tomatic functions were also consumer audio and video • Fast response to fault mes- tion faultlessly. The sample integrated for the lighting and devices. In addition the tablet sages project by ib company GmbH, solar control. The extensive allows communication with • Retrofittable energy-saving Pforzheim, is based on a parameterisation work in the the nursing staff via the in- measures project that has already been actual project was facilitated tegrated patient call system. • Barrier-free operation from implemented. The task was to by the KNX configurator The central functions of the hospital bed network several buildings in with automatically generated control centre include alarm • Comfort, convenience, sa- an existing hospital complex Group Addresses. management. Fault messages fety and security for pati- to permit modern, efficient are relayed to the relevant ents building control with central Functions service department depend- energy management. A central In addition to wall-mounted ing on their type and priority. control station is required to push buttons with room tem- Centrally compiled energy monitor and operate the tech- perature control, the tablet data including those generated nical systems, receive error attached to the hospital bed on site are used for monitor- messages and process energy allows barrier-free opera- ing and optimising measures ib company GmbH Hohenzollernstraße 111 data. Additional tasks: the tion of the room functions. for efficient energy use. 75177 Pforzheim room functions also needed Phone: +49 7231 3970283-0 to be automated to increase Mail: [email protected] www.ib-company.de comfort, convenience, safety and security in the wards, and as energy-saving measures. Control technology for distributed properties in hospitals The solution The electrical installations in the hospital buildings were fitted with KNX a few years ago. An ideal solution to the task therefore presented it- self. The existing KNX-based building services could simply be combined into a single unit using a KNX/IP router (Hag- er). The central control sta- tion for building management now allows visualisation of all the functions in the buildings. The sample project shows in particular the field bus level for regulating the individual room control, lighting control and blind control plus various operating options.

Practical implementation If KNX is already integrated in the building, then functions can often simply be retro- fitted. The KNX individual room control (Gira) was im- plemented using wireless win- dow handles (EnOcean) and

10 2014 www.knx.org